高效RH脱碳工艺参数的优化

特殊钢 ›› 2009, Vol. 30 ›› Issue (1): 25-28.

高效RH脱碳工艺参数的优化

刘柏松^1,2, 朱国森², 李本海², 朱立新², 崔爱民³, 李焕喜¹

1北京航空航天大学材料科学与工程学院，北京100083；
2首钢技术研究院，北京100041 ；
3首钢迁钢公司，迁安064404

收稿日期:2008-07-21 出版日期:2009-02-01 发布日期:2022-11-29
作者简介:刘柏松(1979-)，女，博士研究生，从事纯净钢的生产研究.

Optimization of Parameters for High Efficiency RH Decarburization Process

Liu Baisong^1,2, Zhu Guosen², Li Benhai², Zhu Lixin², Cui Aimin³, Li Huanxi¹

1 School of Materia] Science and Engineering, Beihang University, Beijing 100083;
2Shongang Research Institute of Technology, Beijing 100041 ；
3Qianan Iron and Steel Co, Shougang, Qianan 064404

Received:2008-07-21 Published:2009-02-01 Online:2022-11-29

摘要/Abstract

摘要： 基于RH脱碳数学模型,研究了210tRH精炼装置的脱碳行为,分析了真空度、提升气体流量及浸渍管内径等因素对脱碳过程的影响;在自然脱碳条件下,根据实际取样分析结果,计算出脱碳速率常数K_C,发现整个脱碳过程分为两个阶段,即快速脱碳阶段和脱碳停滞阶段。提高真空度可提高脱碳速率和降低终点[C];提高气体流量不能显著提高脱碳速率,应选择合适的浸渍管内径;快速脱碳阶段的脱碳速率常数可达0.287min^-1。

关键词: 脱碳速率, RH精炼, 超低碳钢

Abstract: Based on(lecarburizah(m math model for RH process, the decarburization behavior of a 210 t RH unit has been studied to analyze the effect of vacuum, lifting gas flow rate and up-leg inner diameter on decarburizing process. At condition of natural decarburization, according to results of sampling analysis to calculate de('arburization rate constant K_c, it was found that the whole (lecarburization process was divided into two phases: quick decarburization phase ami decarburization stagnated phase. The results showed that with increasing vacuum, the decarburizing rate increased and end [C] decreased ;with increasing gas flow rate the increase of decarburizing rate was not outstanding; using suitable up-leg imier diameter was available to get larger decarburizing rate ； and the decarburizing rate constant could be up to 0. 287 min^-1at quick dec'arburization phase.

Key words: Decarburizing Rate, RH Refining, ULC Steel

刘柏松, 朱国森, 李本海, 朱立新, 崔爱民, 李焕喜. 高效RH脱碳工艺参数的优化[J]. 特殊钢, 2009, 30(1): 25-28.

Liu Baisong, Zhu Guosen, Li Benhai, Zhu Lixin, Cui Aimin, Li Huanxi. Optimization of Parameters for High Efficiency RH Decarburization Process[J]. Special Steel, 2009, 30(1): 25-28.

参考文献

1Kita Y, Satio. Rt,iining Technology for Interstitial Free Steel in Kak- ogawa Works. Steelmaking Conference Proceedings, 1990,73 ：79
2Chiang Ming-Siaug, Lin Chang-Tsun, Chou Chang-Long, et al. Application of Off-gas Analysis for RH Decarburization Process. SEAISI Quarterly, 1997 ,26(2)：27
3Yano M, Kitamura S, Harashima K, et al. Improvement of RH Refining Technology for the Production of Ultra Low Carbon and Low Nitrogen Steel. Steelmaking Conference Proceedings, 1994,77 :117
4Kato Y. Development of Rapid Decarburization Technology by Combined Process of Converter and RH Degasser for Ultra Low Carbon Steel. Kawasaki Steel Technical Report, 1995,32 (5) :25
5Kamo M, Adachi K, Nambu M. Longer Life in RH with Oxygen Top Blowing System. Steelmaking Conference Proceedings, 1997 ,80 ：483
6Didier Huin, HulBeret Saini-Raymond, Frani'ois Stouvenot ,et al. Kinetics ol Vacuum Decarburization of Ultra Low Carbon Steels. Steelmaking Conference Proceedings,2001 ,601
7Koji Yamaguchi, Yasuo Kishimoto,Toshikazu Sakuraya ,et al. Effect of Refining Conditions for Ultra Low Carbon Steel on Decarburization Reaction in RH Degasser. IF1J International, 1992 ,32(1) : 126
8Shigeni Inoue, Yoshikazu Furuno,Tsutomu Usui ,et al. Acceleration of Decarburization in RH Vacuum Degassing Process. 1SIJ International,1992,32(1)：120
9Asai S,Okamoto T, He Jicheng,et al. Mixing Time of Gas Blow-in Ke- fining Vessel. Tetsu-to-Hagane, 1982 (68) ：426
10Sunberg Y. Mechanical Stirring Power in Molten Metal in Indies Obtained by Induction Stirring and Gas Blow-in. Scaml. J. Metall, 1987(7)：81
11Kuwabara. Investigation of Dei'arburization Behavior in RH Reactor and its Operation Improvement. Trans, ISIJ, 1988 ( 28 ) ：3O5
12贾斌，陈义胜,贺友多，等・RH真空室熔池和钢包内钢液整体流场的数学模拟.钢铁研究学报,2000,12(9):27
13 Kang Soo-Chang, Kim Kwang-Chtin, Park , et al. Improvr-
ment of Decarburization Capacity of RH Degasser by Revamping at Kwangyang Uorks, POSCO. Steelmaking Conferetu-e Proceedings, 2000:99